Need an practical method to model this bike wheel
The principle can be around this:

We are in top view here, there is a mirror modifier along Z and a subdivision surface:



From left to right:

Add a circle with 6 edges. Shift it a bit along Z (for the mirror and rim thickness).

Extrude all and scale down ES.

Rotate the center part.

Select all the faces and inset I.

Extrude along Z E to the mirror center.

Delete the faces X, faces only.

This is only an approach. Of course you need to work a bit more to make it accurate to the picture.